MATLAB/Octave Implementation of Recommendation ITU-R P.2109

This code repository contains a MATLAB/Octave software implementation of Recommendation ITU-R P.2109-1 with a prediction procedure for estimating building entry loss at frequencies between about 80 MHz and 100 GHz.

This version of the code is functionally identical to the reference version approved by ITU-R Working Parties 3K and 3M and published by Study Group 3 on ITU-R SG 3 Software, Data, and Validation Web Page.

The following table describes the structure of the folder ./matlab/ containing the MATLAB/Octave implementation of Recommendation ITU-R P.2108.

File/Folder	Description
bel_p2109.m	MATLAB/Octave function implementing Recommendation ITU-R P.2109-1
validate_p2109.m	Validation tests against the reference Excel implementation of this Recommendation for a range of location percentages, frequencies, distances and environment categories.

Function Call

Lbe = bel_p2109(f, p, cl, th);

Variable	Type	Units	Limits	Description
f	scalar double	GHz	0.08 ≤ f ≤ 100	Frequency
p	scalar double	%	0 < p < 100	Probability for which the loss is not exceeded
cl	scalar int		1 or 2	Building class: 1: traditional 2: thermally efficient
th	scalar double	deg	0 ≤ th ≤ 90	Elevation angle at the building facade (degrees above the horizontal)

Outputs

Variable	Type	Units	Description
Lbe	double	dB	Building entry loss

References

• Recommendation ITU-R P.2109

• ITU-R SG 3 Software, Data, and Validation Web Page